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common.go
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common.go
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package common
import (
"errors"
"os"
"github.com/summerwind/whitebox-controller/config"
"github.com/summerwind/whitebox-controller/handler"
"github.com/summerwind/whitebox-controller/handler/exec"
"github.com/summerwind/whitebox-controller/handler/http"
)
// The name of environment variable to enable debug log.
const debugEnvVar = "WHITEBOX_DEBUG"
var errNoHandler = errors.New("no handler found")
// NewStateHandler returns StateHandler based on specified HandlerConfig.
func NewStateHandler(c *config.HandlerConfig) (handler.StateHandler, error) {
var debug bool
if c.StateHandler != nil {
return c.StateHandler, nil
}
if os.Getenv(debugEnvVar) != "" {
debug = true
}
if c.Exec != nil {
c.Exec.Debug = (c.Exec.Debug || debug)
return exec.New(c.Exec)
}
if c.HTTP != nil {
c.HTTP.Debug = (c.HTTP.Debug || debug)
return http.New(c.HTTP)
}
return nil, errNoHandler
}
// NewAdmissionRequestHandler returns AdmissionRequestHandler based on specified HandlerConfig.
func NewAdmissionRequestHandler(c *config.HandlerConfig) (handler.AdmissionRequestHandler, error) {
var debug bool
if c.AdmissionRequestHandler != nil {
return c.AdmissionRequestHandler, nil
}
if os.Getenv(debugEnvVar) != "" {
debug = true
}
if c.Exec != nil {
c.Exec.Debug = (c.Exec.Debug || debug)
return exec.New(c.Exec)
}
if c.HTTP != nil {
c.HTTP.Debug = (c.HTTP.Debug || debug)
return http.New(c.HTTP)
}
return nil, errNoHandler
}
// NewInjectionRequestHandler returns InjectionRequestHandler based on specified HandlerConfig.
func NewInjectionRequestHandler(c *config.HandlerConfig) (handler.InjectionRequestHandler, error) {
var debug bool
if c.InjectionRequestHandler != nil {
return c.InjectionRequestHandler, nil
}
if os.Getenv(debugEnvVar) != "" {
debug = true
}
if c.Exec != nil {
c.Exec.Debug = (c.Exec.Debug || debug)
return exec.New(c.Exec)
}
if c.HTTP != nil {
c.HTTP.Debug = (c.HTTP.Debug || debug)
return http.New(c.HTTP)
}
return nil, errNoHandler
}